Lloyd Barnard, 61, is being held on $100,000 cash bail. Police said his son, Colter Kuss, 36, is expected to survive.

Police said they're not sure what provoked the shooting or how many shots were fired. Neighbors and other residents of the Steele Hill Road home said that before the shots were fired, the father and son were having a loud argument.

At his video arraignment in Laconia Circuit Court, Barnard had a clearly visible injury to his head. He was charged with attempted second-degree murder and first-degree assault.

"Mr. Barnard is the biological father of the victim," said Lt. Kevin McIntosh. "Multiple shots were fired from this firearm into the victim."

Police said they received several 911 calls about 9:15 p.m. Sunday reporting that shots were fired at 228 Steele Hill Road in Sanbornton. When police arrived, they found Kuss in the driveway suffering from several gunshot wounds to the legs.

Police said there were concerns at first that the gunman had fled into the woods.

"So they obviously were being very cautious, using cover as they approached," said Chief Stephen Hankard. "Then they were told by another resident that was in the residence that he was back inside."

Police said Barnard surrendered without incident. Investigators said they are still looking into how the shooting unfolded, but the defense suggested that Barnard might have been the victim, because the shooting took place at the home where he was staying, and he suffered a head injury.

Police said that while they don't have all the answers yet, there is no question in their minds who the victim is.